Electrical inclosure



Patented Aug. 22, 1933 PATENT OFFICE ELECTRICAL INCLOSURE William W. Sloane, Chicago, Ill., assignor to Goodman Manufacturing Company, Chicago, 111., a Corporation of Illinois Application March 6, 1929, Serial No. 344,648 Renewed November 16, 1932 11 Claims.

My invention relates particularly to inclosures, such as are used to inclose electrical devices, for the prevention of sparks from such inclosed devices igniting explosive gases on the outside of such inclosures, with a view toward the use of electrical devices with safety in underground mines where explosive gases are often encountered, although not limited to this use alone.

The general objects of the invention reside in 1D the provision of a simple, rugged and effective securing device for securing the several parts of an inclosure together, which is well adapted to withstand explosive pressures, which is preferably provided with convenient means for locking the closure parts in secured relation against unauthorized unlocking thereof, and which is preferably adapted for the securing of an elongated cover member in closed position over a correspondingly shaped access opening of an inclosure.

With these objects in View my invention consists in certain features of novelty in the construction, combination and arrangement of parts by which the said objects and certain other objects, hereinafter appearing, are effected, all as fully described with reference to the accompanying drawing and more particularly pointed out in the appended claims.

In the said drawing:

Figure 1 is a plan view of an electric motor provided with an inclosure embodying my invention;

Figure 2 is a partial section on the line 22 of Figure 1; and

Figure 3 is a partial section on the line 3-3 of Figure l.

Like numerals refer to like parts throughout the several figures.

Referring to the drawing, 1 designates an inclosure within which is disposed an electric mo- 40 tor 2. See Figure 1. The inclosure 1 is provided adjacent one end thereof with an elongated rectangular opening providing access into said inclosure for inspection and repair; and this opening is closed by a correspondingly shaped remov- 40 able closure part or cover '3, the joint between said inclosure and cover being of a continuous engaging tongue and groove flame tight construction, as designated at 4, which is the subject matter of a co-pending application for U. S. Letters Patent filed by Glenn W. Packer, Serial Number 326,945, entitled Inclosure means for electrical devices and the like.

A pair of securing members 5 are spaced longitudinally of the cover 3 and are disposed on axes normal to the plane of said cover and are journaled for angular movement in correspondingly disposed bores through said cover.

These securing members 5 are provided with enlarged portions 6 on the inside of the. cover 3 which provide axial shoulder surfaces having 6 bearing engagement with said cover to limit out ward movement of said securing members with respect to said cover. See Figures 2 and 3. Col lars '7 on the outside of the cover 3 are screwthreaded on the securing members 5 and have axial bearing engagement with said cover to limit inward movement of said securing members, and provide a flame extinguishing surface between the securing members and the cover 3.

Radial operating members 8 on the outside of the covers 3 and collars 7 areriveted onthe outer ends of the securing members 5, as designated at 9, for angular manipulation of said securing members.

The aforementioned enlarged portions 6 of the securing members 5, which are disposed on the inside of the cover 3, are provided with diametrie cally opposite radial securing lugs 11, and these lugs are engageable under inwardly facing shoulder surfaces 12 of the inclosure 1 and disposed on opposite sides of the opening thereof for securing the cover 3 in closed position on the in closure 1, the lugs 11 being engageable with and disengageable from the shoulder surfaces 12 with angular movement of the securing members 5.

When the lugs 11 are engaged under the surfaces 12 to secure the cover 3 in closed position on the inclosure, the operating members 8 are adapted to have their outer end portions overlying, and these overlying portions are provided with registering apertures 13 for engagement by a padlock 14 to lock the operating members 8 in securing position against unauthorized operation thereof out of such position. Thus is provided a common locking means for the several securing devices, it being observed that the cover 3 is secured on both sides thereof and at spaced points along its length.

While I have herein shown and described one form in which my invention may be embodied, it will be understood that the arrangement or construction of the various parts may be altered or changed without departing from the spirit or scope of the invention. Furthermore, I do not wish to be construed as limiting myself to the 105 specific embodiment illustrated, excepting as it may be limited by the appended claims.

I claim as my invention: a

1. In an inclosure of the character described, the combination with a closurepart, of a securing member journaled for angular movement in a bore through said closure part and having an enlarged portion on the inside of said closure part providing an axial shoulder surface having a bearing engagement with said closure part and said enlarged portion being provided with diametrically opposite radial securing lugs for releasably securing the same, a collar on the outside of said closure part and screwthreaded on said securing member and having an axial bearing engagement with said closure part to provide a flame extinguishing surface between said securing member closing part, and a radial operating member on the outside of said closure part and collar and secured on the outer end of said securing member.

2. In an inclosure, the combination with a closure part, of a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and provided with axial shoulder surfaces on the inside of said closure part having a bearing engagement therewith and provided with diametrically opposite securing lugs on the inside of said closure part for releasably securing the same, collars on the outside of said closure part and engaged on said securing members and having axial bearing engagement with said closure part to provide a flame extinguishing surface between said securing members and closure part, radial operating members on the outside of said closure part an collars and secured on each of said securing members, and a common means for locking said operating members against unauthorized operation thereof out of securing position.

3. In an inclosure, the combination with a closure part, of a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and said enlarged portions being provided with diametrically opposite radial securing lugs for releasably securing the same, collars on the outside of said closure part and screw-threaded on said securing members and having axial bearing engagement with said closure part to providepa flame extinguishing surface between said securing members and closure part, radial operating members on the outside of said closure part and collars and riveted on the outer ends of each of said securing members, said operating members being adapted when in securing position to have portions thereof overlying, said overlying portions being provided with registering apertures therethrough for engagement by a padlock.

4. In an inclosure, a closure part therefor and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure part, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure.

5. In an inclosure, a closure part therefor, said inclosure and closure parts being provided with continuous engaging tongue and groove joints of an explosion proof construction, and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided With diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure part, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure. 7

6. In an inclosure, a closure part therefor, said inclosure and closure parts being provided with continuous engaging tongue and groove joints of an explosion proof construction, and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure part, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure and a common locking means for locking saidsecuring members against unauthorized operation thereof out of 1 securing position.

7. In an inclosure, a closure part therefor, said inclosure and closure parts being provided with continuous engaging tongue and groove joints of an explosion proof construction, and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure'part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shoulderedv portion on the inside of said inclosure for releasably securing said closure part, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure and the overlying portions of said operating members being provided with registering apertures therethrough for engagement by a padlock.

8. In an inclosure, a portion of said inclosure providing an elongated rectangular opening therein for access into said inclosure, an elongated rectangular closure part therefor and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure parts, and radial operating members on each of said securing members adapted to having portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure.

9. In an inclosure, a portion of said inclosure providing an elongated rectangular opening therein for access into said inclosure, an elongated rectangular closure part therefor, said portion of said inclosure providing an elongated rectangular opening therein and said closure part being provided with continuous engaging tongue and groove joints of an explosion proof construction, and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part pro viding axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure parts, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said-securing members when said securing members are in a position to permit opening of said inclosure.

10. In an inclosure, a portion of said inclosure providing an elongated rectangular opening therein for access into said inclosure, an elongated rectangular closure part therefor, said portion of said inclosure providing an elongated rectangular opening therein and said closure part being provided with continuous engaging tongue and groove joints of an explosion proof construction and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure parts, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure and a common locking means for locking said securing members against unauthorized operation thereof out of securing position.

11. In an inclosure, a portion of said inclosure providing an elongated rectangular opening therein for access into said inclosure, an elongated rectangular closure part therefor, said portion of said inclosure providing an elongated rectangular opening therein and said closure part being provided with continuous engaging tongue and groove joints of an explosion proof construction and means for locking said closure part in a closed position with respect to said inclosure comprising a pair of securing members journaled for angular movement in spaced parallel bores through said closure part and having enlarged portions on the inside of said closure part providing axial shoulder surfaces having bearing engagement with said closure part and provided with diametrically opposite radial securing lugs engageable with a shouldered portion on the inside of said inclosure for releasably securing said closure parts, and radial operating members on each of said securing members adapted to have portions thereof overlying when each of said securing members are in securing position, and so arranged that both of said radial operating members must be substantially perpendicular to a common line intersecting the centers of said securing members when said securing members are in a position to permit opening of said inclosure and the overlying portions of said operating members being provided with registering apertures therethrough for engagement by a padlock.

WILLIAM W. SLOANE. 

